Ƙaramar ƙararrawa (LNA), mitar 9K ~ 1GHz, samun 30dB, siffar amo (NF) 2dB

Ƙaramar ƙaramar amo shine maɓalli mai mahimmanci a cikin tsarin RF/microwave, galibi ana amfani dashi don haɓaka sigina mara ƙarfi yayin rage ƙarin amo. Babban ayyukanta da yanayin aikace-aikace sune kamar haka:

Babban Ayyuka:

1. Ƙara sigina
Haɓaka girman sigina masu rauni da eriya ko na'urori masu auna firikwensin da aka karɓa don tabbatar da ingantaccen aiki ta da'irori masu zuwa kamar mahaɗa da ADCs.
2. Damuwar surutu
Ta hanyar haɓaka ƙirar ƙira da amfani da ƙananan kayan amo, ƙirar amo da aka gabatar da kai (NF) ana sarrafa shi a cikin kewayon 0.5-3dB (mafi kyawun NF = 0dB).

Yanayin aikace-aikacen:

1. Tsarin radar
A cikin radar soja (kamar radar sarrafa gobara ta iska) da radar farar hula (kamar radar motsin motsi na milimita), ana amfani da LNA don haɓaka siginar faɗakarwa mai rauni (siginar-zuwa-amo rabo SNR <0dB) wanda manufa ta nuna. Lokacin wucewa ta hanyar haɗin haɓakawa tare da NF <2dB, radar na iya gane maƙasudi tare da nesa ko ƙananan RCS (sashin giciye radar).
2. Tsarin sadarwa mara waya
Ƙarƙashin ƙaramar ƙarar amo shine ainihin ɓangaren tashoshin tushe na 5G/6G, sadarwar tauraron dan adam, da hanyoyin haɗin wayar hannu. Yana da alhakin ƙara ƙaramar ƙararrawa (NF <1.5dB) na siginar RF mai rauni (ƙananan -120dBm) da eriya ta kama kafin lalata siginar, yana haɓaka haɓakar karɓar tsarin. Misali, a cikin mitar mitar kalaman milimita (24 - 100GHz), LNA na iya ramawa har zuwa 20dB na asarar hanya, yana tabbatar da kwanciyar hankali na watsa bayanai mai sauri.
3. Babban madaidaicin kayan gwaji
A cikin na'urori irin su spectrum analyzers da vector network analyzers (VNA), LNA kai tsaye yana ƙayyade aikin hayaniyar kayan aiki da kewayo mai ƙarfi. LNA na iya haɓaka ƙwarewar kayan aiki ta haɓaka siginar da aka auna matakin nV zuwa ingantacciyar kewayon ƙididdigewa na ADC (kamar 1Vpp). A halin yanzu, ƙarancin amo mai ƙarancin ƙarfi (NF <3dB) na iya rage rashin tabbas na auna yadda ya kamata da rage kurakuran auna.
4. Fadada wuraren aikace-aikace
Tauraron taurari na rediyo: Na'urar hangen nesa ta FAST ta dogara da ruwa mai sanyaya LNA (NF ≈ 0.1dB) don kama layukan gani na 21cm a cikin sararin samaniya.
Ƙididdigar ƙididdiga: Ƙara siginonin matakin μV (4 - 8GHz) na manyan ayyuka na qubits yana buƙatar kusa da iyakacin amo.
Hoto na likitanci: Kayan aikin MRI yana haɓaka siginar maganadisu na magnetic matakin μV ta hanyar LNA mara ƙarfi, tare da haɓakar siginar-zuwa amo fiye da 10dB.

Qualwave Inc. yana ba da ƙaramar ƙaramar ƙararrawa daga 9kHz zuwa 260GHz, tare da adadi mai ƙaranci kamar 0.8dB.
Tsarin QLA-9K-1000-30-20, wanda aka tsara musamman don bincike na kimiyya da aikace-aikacen sadarwa, yana samun ingantaccen ma'auni na ƙimar 30dB da adadi na amo na 2dB a cikin rukunin mitar 9kHz ~ 1GHz.